Machine for manufacturing double-faced corrugated board.



T. E. RAFFEL.

MACHINE FOR MANUFACTURING DOUBLE FAGED CORRUGATED BUARD.

APPLICAHON FILED JUNE 26. m4.

1,146,771. Patented July 13, 1915.

3 SHEETSSHEET I.

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wit zone-v T. E. HAFFEL. MACHINE FOR MANUFACTURING DOUBLE FACEDCORRUGATED BOARD.

APPLICATION HLED JUNE 26, I914.

Patented July 13, 1915.

3 SHEETSSHET2 wi bneooeoz UNITED STATES PATENT OFFICE.

TOBIAS RAFFEL, OF NEW YORK, N. Y., ASIGNOR TO PAPER WORKING MACHINES 1COMPANY, A CORPORATION OF NEW YORK.

MACHINE FOR MANUFACTURING DOUBLE-FACE!) CORRUGATED BOARD.

s ecification of Letters Patent. Patented July 13, 1915 Applicationfiled June 26, 1914. Serial No. 847,399.

To all 1072 cm at m ay concern:

Be it known that I, Tomas E. RAFFEL, a citizen of the United States,residing in the city, county, and State of New York, have inventedcertain new and useful Improvements in Machines for -l\lanufacturingDouble-Faced Corrugated Board, of which the following is aspecification.

This invention relates to improvements in the manufacture ofdouble-faced corrugated paper board and more particularly to an improvedmachine for producing corrugations in a sheet of paper and applyingfacing sheets to both sides of the corrugated sheet.

Double-faced board is a product consisting of a sheet of corrugatedpaper smoothly faced on both sides with sheetsof plain paper. It isordinarily manufactured by applying, in a separate machine, a secondfacing to previously formed single faced corrugated paper. Attempts havebeen made to produce the corrugations and apply both facings in a singlemachine. The machines heretofore employed have generally operated tosimultaneously afiix the two facings to the corrugated sheet but owingto the difiiculty in such mode of operation. of smoothly and firmlyapplying both facings without crushing or distorting the intermediatecorrugations, the product has not been entirely satisfactory. Accordingto my invention I overcome these dilhculties by providing a continuouslyoperating machine which is organized to operate, in a continuous seriesof steps, to first corrugate the intermediate sheet then to successivelyapply the two facings thereto and finally to cut the board into piecesof desired lengths.

The essential feature of the invention herein claimed resides in theprovision, in a machine of the character specified, of a new combinationof elements with a new mode of operation whereby the two facing sheetsare applied, one after the other, to the corrugated sheet and resultingin the manufacture of a superior product.

In the accompanying drawings, forming a part of the specification,Figure 1 is a diagrammatic side view of a machine embodying byinvention. Fig. 2 is an elevation in perspective of the front section ofthe machine, comprising the corrugating mechanism and the mechanism forapplying the first facing sheet, and Fig. 3 is an elevation inperspective of the rear section, comprising the mechanism for applyingthe second facing sheet and the cutting mechanism. Figs. 2 and 3 takentogether constitute a perspective of the complete machine.

The machineis designed to operate continuously and it comprises amechanism for drawing a strip of paper from a supply roll and producingcorrugations therein a mechanism for applying adhesive tothecorrugations on the under side of the strip; a mechanism for advancingthe corrugated strip with its-under side in contact with a facing stripover a stationary heater, whereby sald strips are united and dried;guiding means for reversing the single faced strip;

means for drawing said strip with its unable corrugating mechanism. Asillustrated in the drawings said mechanism is mounted 1n standards 2.and comprises preferably three co-acting corrugated rolls 3, 4, and 5which are heated by steam or other suitablemedium, and are borne invertically movable bearings. Adjusting devices 6, acting on saidbearings, are provided to afford regulation of the pressure between therolls. The lower pair of rolls are each provided with a series of alinedcircumferential grooves 7. A set of curved fingers S are mounted on across piece 9 in position adjacent to and concentric with the face oftheroll 4 and with their lower ends projecting into the grooves of the roll3. The paper passes between the pairs of heated rolls 5 and 4 and 4 and3 respectively whereby the corrugations are produced and set. In itspassage the paper is guided from the roll 4 to the roll 3 by the fingers8. The corrugated sheet is drawn forward over the table 10 provided witha pair of adjustable flanges 11 between which it is guided on to thepaste-roll 12, rotating in a paste receptacle 7 sheet.

cams 16 (one under each of its ends) carried on a' spindle 17 which isprovided with a handle 18. Normally the receptacle rests on the highpart of the cams in position adjacent to the paste-roll but when themachine is idle and in order to keep the paste roll clean, thereceptacle may be lowered away from the roll by merely turning thehandle 18.

Mounted upon the frame of the machine, forward of the paste-roll 12, isa heated ta- I ble 19 having a smooth face over which the corrugatedsheet passes in contact with the first facing sheet while said sheetsare being united and dried. The table is preferably formed of a seriesof chests having pipe connections for circulating steam or othersuitable heating medium therethrough. At the front of the table and inline with its surface is a roller 20 which assists in draw ing the firstfacing sheet from its supply roll 13 and advancing it upon the heater.This roller is preferabiy heated so as to heat the facing paper beforeit comes into contact with the corrugatei'l sheet. Carried on sprockets21. which are mounted directly above the opposite ends of the table 19,is

an endless chain composed of a. plurality of presser-plates 22 connectedtogether by links. The lower run of the chain travels substantiallyparallel to the face of the ta.- ble and serves to advance thecorrugated strip and the facing strip with a. slight pressure suflicientto hold them against the heated surface. On its upper run the chaintravels over an idler One of the pairs of sprockets 21 is supported inhorizontally adjustable journal boxes which are provided with adjustingscrews 24 whereby the pres sure of the chain maybe regulated. On

leaving the heater the corrugated sheet having a first facing sheetfirmly united thereto. is drawn over a guide roller 25 which serves toreverse the composite strip so as to bring its unfaced side downward. Itthen travels rearwardly over the small itllers 26, across the bridge 27.downwardly over. the idler 28, across the table 29. having adjustableguide flanges 80, under the roll 31. and over the roll 32 of a pasteapplying mechanism, similar in details of construction to thatheretofore described, whereby a coating of ad hesive is supplied to thecrowns of the corrugations on the unfaced lower side of the strip. ,Ifdesired the strip may be carried mechanism 32, is a second heated table34 which is simiiar to the table 19 but preferably of a greater lengthso as to thoroughly dry the completed product. Between the end of thistable and the rotary cutter are mounted one or more pairs of adjustablerolls 35 which serve to draw'the composite strip together with thesecond facing sheet. from its supply roll C, over the table 3i and underthe traveling plates 37. The rolls 35 are preferably covered with asuitable material such as rubber, to increase their grip on the paperwithout undue pressure thereon. At the forward end of the heater isdisposed a roll 36 which aids in drawing the facing sheet. A secondendless chain composed of a plurality of presserplates 37 connected bylinks, is mounted above the table 34 and is carried on driving sprockets38 and idlers 39. Screw devices 4th acting on the forward sprockets, areprovided for adjusting the chain. Said chain is mounted and driven sothat the lower plates thereof, which bear on the paper, will move in thedirection of travel of the paper but at a slower rate of surface speedthan that at which the paper is advanced by the drawing rolls 35, andconscquently, said plates will drag on the upper sheet or side of thepaper and thereby exert an ironing effect thereon.

The shafts of the supply rolls of facing paper B and C are provided withremovable and adjustable friction brakes of any suitable construction,whereby sufficient resistance may he applied to 'hold the facingsheetsjaut as they are being drawn from said rolls. I

When the product leaves the heated table 34. and as it passes throughthe drawing rolls 35, it is firmly united. strong and stiff board. Tocut this board into pieces of desired length, I provide a rotary cutter41 mounted in a stand 42 and co-acting with a stationary cutter 43. Thiscutting mechanism may be of any suitable con struction but it ispreferably made in accordance with the disclosure of my Patent No.1,0683% of July 29th, 1913, wherein is shown and described a mechanismwhich is particularly well suited for the purpose and which is adaptedto automatically sever pieces of desired length from the end of thepaper, without interrupting the travel thereof, and to deliver saidpieces from the machine.

The several moving parts of the machine are operatively connected by asystem of sprockets, chains and gears which are driven from a shaft -14provided with the usual driving and loose pulleys 45.

Nliile the machine is designed primarily for the manufacture ofdouble-faced board, the forward end thereof comprising the corrugatingmechanism and the mechanism for applying the first facing sheet, may beseparately employed to manufacture singlefaced board. To this end Iprovide the driving system with a suitable clutch 46 controlled by alever 47 and operative to disconnect the second facing and the cut tingmechanism.

From the foregoing description, the operation of the machine Will bereadily understood by those skilled in the art and it will, furthermore,be understood that various modifications and changes may be made in theconstruction set forth without dc parting from the spirit or scope of myin vention. I do not, therefore, limit myself to the preciseconstruction and arrangement of parts herein described except in so faras I am limited by the terms of the appended claims.

IVhat I claim is 1. In a machine for manufacturing double-facedcorrugated board, the combinationof two stationary flat heaters, meansfor guiding a corrugated sheet from one to the other and turning saidsheet upside down in its passage, and means movable relative to eachheater for successively applying the opposite faces of the corrugatedsheet to separate facing sheets.

In a machine for manufacturing double faced corrugated board thecombination of, a corrugating mechanism, two fiat heaters, means movablerelative to each heater for successively applying the opposite surfacesof a corrugated sheet to separate facing sheets, and means for guidingthe product in the course of manufacture from one of the heaters to theother.

3. In a machine for manufacturing double-faced corrugated board, thecombination of, a smooth-faced stationary heater, means movable relativethereto for advancing the corrugated sheet and a facing sheet over theheater and applying the corrugated sheet to the facingsheet, guidingmeans for reversing the single-faced sheet, a second smooth-facedheater, a plurality of presserplates traveling in spatial relationthereto for applying the unfaced surface of the single-faced sheet to asecond facing sheet, and means for steadily drawing the sheets betweenand in contact with the adjacent faces of the heater and pressei plates.

4. In a machine for manufacturing dou hie-faced corrugated board, thecombination of, a smooth iaced stationary heater, a plurality ofpressenplates movable relative thereto for advancing the corrugatedsheet and a facing sheet over the heater and applying the underside ofthe corrugated sheet to the facing sheet, guiding means for reversingthe singlefaced sheet, a second smooth-faced heater, a plurality ofpresserplates movable relative to said second heater for applying theunfaced surface of the single-faced sheet to a second facing sheet andtraveling *slower than the sheets, and means for steadily drawing thesheets between and in sliding contact with the adjacent faces of saidsecond heater and presserplates.

5. In a machine for manufacturing double-faced corrugated board, thecombina tion, of two stationary plane faced heaters, an endlesstraveling belt mounted above each heater with its lower reachsubstantially parallel to the surface thereof, and a guideway disposedrelative to said heaters for directinga web from one to the other andarranged to turn the web upside down during its passage.

6. In a machine for manufacturing douhie-faced corrugated board, thecombination, of two co-acting mechanisms, adapted to operatesuccessively upon a plurality of layers of material, each including atable, and a member movable longitudinally over the table andsubstantially parallel to the surface thereof, said members beingmovable in opposite directions with respect to each other, means foractuating said members, and a guideway leading from the discharging endof the first table to the receiv ing end of the second wheredn'thematerial is turned upside down in its passage from faced corrugatedboard, comprising a plurality of mechanisms organized to operate .uponthree sheets of paper and in successive steps of acontinuous operation,to produce corrugations in, one of the sheets, to apply adhesi-ve'to thelower surface of -the corrugated sheet, to draw the second sheet over aplane-surface in contact with. and underneath the corrugated sheet andto apply sufiicient pressure thereon to unite said sheets withoutcrushing the corrugations, to turn. the single-faced sheet upside down,to apply adhesive to the unfaced surface of said single'faced sheet, todraw the third sheet over a plane-surface in contact with and underneaththe unfaced surface of the single-faced sheet, and to apply sufficient vpressure thereon to unitesaid sheets withfaced corrugated board,comprising a lurality of v corrugating' rolls, two heated tablesdisposed at opposite sides of the corrugati ng rolls, an endless beltmounted above" each of the tables, a plate applying device locatedadjacent to the receiving end of each table, and a guide for directingthe product in the course of manufacture from the discharging end of theone table to the receiving end of the other.

10. A machine for manufacturing double faced corrugated board,comprising a plurality of corrugating rolls, two heated tables disposedat opposite sides of the corrugating rolls with their receiving endsadjacent said rolls, a paste applying device between the corrugatingrolls and the receiving end of each of the tables, an endless chain ofpresser-plates mounted above each of the tables, a bridge for guidingthe product from the discharging end of the one table to the receivingend of the other, and means for rotating the two endless chains inopposite directions with respect to each other.

11. In a machine for manufacturing double-faced corrugated board, a fiatheater there :1 yfacing' sheet, guiding means for reversing hav' a'traveling'belt mounted adjacent for applying a corrugated sheet to thesingle-faced sheet, and a second fiat heater having a traveling beltmounted adjacent thereto for applying the lmfaced side of thesingle-faced sheet to a second facing sheet.

12. In a machine for manufacturing double-faced corrugated board, a fiatheater having a traveling belt mounted thereon for applying theunderside of a corrugated sheet to a facing sheet, guiding means forreversing the single-faced sheet, a second fiat heater having atraveling belt mounted ther on for applying the unfaced lower side ,ofthe single-faced sheet to a second facing sheet, said belts traveling inopposite directions with respect to each other.-

In testimony whereof, I have hereunto afiixed my signature in thepresence ef two subscribing witnesses.

TOBIAS E. RAFFEL.

\Vitnesses:

LESTER F. Drr'rnnnonrnn, RosAMoND M. 004m.

Correction in Letters Patent No. 1,146,771.

upon the application of Tobias E; Rafiel, of New York, N. Y., for animprovement in Machine etc! Manufacturing Douhle-Faced Corrugated Board,an error appears in the printed specification requiring correction asfollows: Page 4, line -5,

with this correction therein that the eame may conform to the record ofthe case inthe Patent Offiee.

Signed and mld this 27th day of July, A. 1)., 1915.

R. F. WHITEHEAD, Ad'ihg C'omm'isa'ionerof Pmtents.

[SEAL-1 Itis hereby eertified that in Letters Patent No. 1,146,771,granted July 13, 1915,

for the word plate read paste; and that the said Letters Patent shouldbe read

